Here's a selection of relevant articles about air-entrained concrete from AEC companies and organizations, including Lehigh Portland Cement Co., IPA Systems, Inc.
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IPA Systems
...impregnated with DURIPAL-H remain permeable to gases and vapor. Liquids: DURIPAL-H reduces the surface permeability of porous materials such as limestone or sandstone and air-entrained concrete, and forms a water repellent barrier. Chemical: Treated surfaces are protected against aggressive atmospheres, chemical pollutants, vehicle exhaust and salt spray. See #1.
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Lehigh Cement Company-Education Glossary
...paste or a combination of these materials. The concrete has a homogeneous cell structure, visible to the eye. Also called cellular concrete. Not to be confused with air-entrained concrete, in which air bubbles are microscopic in size. aggregates The general term for the sand and rock used in construction. Fine aggregates are sand and... See #2.
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